1. School of Earth and Environment Anhui University of Science and Technology Huainan China
2. Hubei Key Laboratory of Yangtze River Catchment Environmental Aquatic Science School of Environmental Studies China University of Geosciences Wuhan Hubei P. R. China
3. Department of Geology and Geophysics Texas A&M University College Station TX USA
4. Department of Civil Engineering Baze University Abuja Nigeria